When the Most Highly Aggressive Female Mice Are Bred with Random

Multiple Choice

When the most highly aggressive female mice are bred with random male mice,and for each generation only the highly aggressive female mice are selected to breed,what happens to these selected female mice over successive generations?

A) The highly aggressive female mice become more and more aggressive in each new generation.
B) The effect of aggression in female mice is negated by the random effect of the male mice.
C) The highly aggressive female mice eventually die out because of stress-related reactions.
D) The male mice become extremely hostile and aggressive in order to stay alive.